Features
- True power system design complaints ANSI-IEEE, IEC & VDE standards
- High over capability to assure reliable operation
- Ration programmable with field re-range ability
- High accuracy of 0.2% fs
- 4-1/2 digits maximum of 19999 counts
- Super rate display of 0.56"
Applied rules and standards
- Measuring & conversion : IEC 688
- Dielectric strength IEC : 688
- Impulse & Surge test :
- ANSI C37.90.1 / 1989
- IEC 255-3 (1989)
- Adaptability-power system : IEC 0110
- Measuring reliability : VDE 3540
Model & Ordering
Specification
- Accuracy (23 + 3oC) : 0.2% fs
- Stability : Temperature coefficient < 50 ppm per degree C. Long term draft < 0.2% per year
- Digits / counts / display : Maximum 19999 counts of 4-1/2 digits. 0.56" super rate LED
- Configuration : Ratio settable : CT ration for UMAF, PT ration for UMVF
- Response time : Sample rate 1 of per sec typically
- Input burden : 0.25VA maximum
- Input over :
- Current input : 3 * rating-continuous, 10 * rating - 30 sec, 25 * rating - 3 sec
- Voltage input : maximum continuous 750V or 3 * rated which ever great
- Frequency : 48 - 400 Hz
- Dielectric strength :
- 2.5KV rms / 1 minute, all terminals to reference ground (case)
- 2KV rms / 1 minute, input terminals to power terminals
- Surge test : ANSI C37.90.1/1989, IEC 255-3 (1989)
- impulse voltage :
- Impulse voltage 1.2 * 50 us 4KV
- Oscillation wave 0.5us - 100KHz 3KV & 1MHz - 0.25ms 2.5KV
- Operating condition:
- Temperature range -10 to 55oC, 0 to 99% RH non-condensed
- Storage -25 to 70oC, 20-99% RH non-condensed
- Auxiliary power : AC / DC version < 3.5VA, DC option version +20% < 5 watts
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